Nginx启动时提示nginx: [emerg] still could not bind()

centos6.9 启动Nginx： /usr/local/nginx/sbin/nginx 时，提示以下内容：

[root@host ~]# /usr/local/nginx/sbin/nginx 
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] still could not bind()

解决办法：

根据Nginx配置文件查看配置的端口（本文中使用的是80端口），然后根据端口查看端口占用情况

[root@host nginx]# netstat -ntlp|grep 80
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      15660/nginx

使用kill命令杀死占用进程，之后重新启动Nginx

  kill -9 15660